Canopy Spectral Reflectance Characteristics of Rice with Different Cultural Practices and Their Fuzzy Cluster Analysis
Author(s): XUE Li-hong, CAO Wei-xing, LUO Wei-hong, YANG Lin-zhang
Pages: 57-62
Year: 2005 Issue: 1
Journal: RICE SCIENCE
Keyword: rice; cultural practices; canopy reflectance spectrum; fuzzy cluster analysis;
Abstract: The influence of major cultural practices including different nitrogen application rates, population densities, transplanting leaf ages of seedling, and water regimes on rice canopy spectral reflectance was investigated. Results showed that increased nitrogen rates, water regimes and population densities and decreased seedling ages could enhance reflectance at NIR (near infrared) bands and reduce reflectance at visible bands. Using reflectance of green, red and NIR band and ratio index of 810-560 nm could distinguish the different type of rice by fuzzy cluster analysis.
Pages: 57-62
Year: 2005 Issue: 1
Journal: RICE SCIENCE
Keyword: rice; cultural practices; canopy reflectance spectrum; fuzzy cluster analysis;
Abstract: The influence of major cultural practices including different nitrogen application rates, population densities, transplanting leaf ages of seedling, and water regimes on rice canopy spectral reflectance was investigated. Results showed that increased nitrogen rates, water regimes and population densities and decreased seedling ages could enhance reflectance at NIR (near infrared) bands and reduce reflectance at visible bands. Using reflectance of green, red and NIR band and ratio index of 810-560 nm could distinguish the different type of rice by fuzzy cluster analysis.
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